| 9.29.6. |
Plywood Finish |
| 9.29.6.1. |
Thickness
- Except as provided in Sentences (2) and (3), the minimum thickness of plywood interior finish shall conform to Table 9.29.6.1.
Table 9.29.6.1.
Thickness of Plywood Interior Finish
Forming Part of Articles 9.29.6.1. and 9.29.6.2.
Notes to Table 9.29.6.1.:
(1) Thickness limits shall apply to the net effective thickness (NET) of grooved, striated, textured and/or embossed panels and to the actual thickness of flat panels.
- A manufacturing tolerance of −0.4 mm may be applied to the thicknesses listed in Table 9.29.6.1.
- No minimum thickness is required where plywood is applied over continuous backing.
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| 9.29.6.2. |
Grooved Plywood
- Except as permitted in Sentence (2), where plywood for interior finish is grooved, the grooves shall not extend through the face ply and into the plies below the face ply unless the groove is supported by framing or furring.
- If the grain of the face ply is at right angles to the supporting members, the groove is permitted to extend into plies below the face ply provided the thickness of the plywood exceeds the value shown in Table 9.29.6.1. by an amount equal to not less than the depth of penetration of the grooves into the plies below the face ply.
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| 9.29.6.3. |
Nails and Staples
- Except as provided in Sentence (2), nails for attaching plywood finishes shall not be less than 38 mm casing or finishing nails spaced not more than 150 mm o.c. along edge supports and 300 mm o.c. along intermediate supports, except that staples providing equivalent lateral resistance may also be used.
- Where plywood finish provides required bracing in braced wall panels, the plywood shall be fastened in accordance with the fastening requirements for sheathing stated in Sentence 9.23.3.5.(2).
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| 9.29.6.4. |
Edge Support
- All plywood edges shall be supported by furring, blocking or framing.
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